1520113943 has 8 divisors (see below), whose sum is σ = 1610862000. Its totient is φ = 1430440128.

The previous prime is 1520113919. The next prime is 1520113949. The reversal of 1520113943 is 3493110251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520113943 - 2⁶ = 1520113879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520113949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265646 + ... + 271307.

It is an arithmetic number, because the mean of its divisors is an integer number (201357750).

Almost surely, 2^1520113943 is an apocalyptic number.

1520113943 is a deficient number, since it is larger than the sum of its proper divisors (90748057).

1520113943 is a wasteful number, since it uses less digits than its factorization.

1520113943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537121.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1520113943 is about 38988.6386399936. The cubic root of 1520113943 is about 1149.8081451843.

The spelling of 1520113943 in words is "one billion, five hundred twenty million, one hundred thirteen thousand, nine hundred forty-three".